<div id="page1_header">什么是HTML5?</div>
<div id="page1_content">
	<div id="page1_part1">HTML&nbsp;&nbsp; = 超文本标记语言（Hyper Text Markup language）</div>
	<br/>
	<div id="page1_part2">HTML5 = 第五代HTML</div>
</div>
<script type="text/javascript">
isPageOver = false;
</script>